sys/arch/mvme68k/dev/timekeeper.c

   1 /*      $NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Steve C. Woodford.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Attachment interface for the Time-Keeper RAMs on mvme boards.
  34  *
  35  * XXXSCW: Needs to be extended to allow read/write to NVRAM by
  36  * userland application.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __KERNEL_RCSID(0, "$NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui Exp $");
  41
  42 #include <sys/param.h>
  43 #include <sys/systm.h>
  44 #include <sys/device.h>
  45 #include <sys/conf.h>
  46
  47 #include <machine/cpu.h>
  48 #include <machine/bus.h>
  49
  50 #include <dev/mvme/clockvar.h>
  51
  52 #include <dev/ic/mk48txxreg.h>
  53 #include <dev/ic/mk48txxvar.h>
  54
  55 #include <mvme68k/dev/mainbus.h>
  56
  57 #include "ioconf.h"
  58
  59 int timekeeper_match(device_t, cfdata_t, void *);
  60 void timekeeper_attach(device_t, device_t, void *);
  61
  62 CFATTACH_DECL_NEW(timekeeper, sizeof(struct mk48txx_softc),
  63     timekeeper_match, timekeeper_attach, NULL, NULL);
  64
  65 int
  66 timekeeper_match(device_t parent, cfdata_t cf, void *aux)
  67 {
  68         struct mainbus_attach_args *ma = aux;
  69
  70         if (strcmp(ma->ma_name, timekeeper_cd.cd_name))
  71                 return (0);
  72
  73         return (1);
  74 }
  75
  76 void
  77 timekeeper_attach(device_t parent, device_t self, void *aux)
  78 {
  79         struct mk48txx_softc *sc = device_private(self);
  80         struct mainbus_attach_args *ma = aux;
  81         bus_size_t size;
  82
  83         sc->sc_dev = self;
  84         sc->sc_bst = ma->ma_bust;
  85
  86         if (machineid == MVME_147) {
  87                 size = MK48T02_CLKSZ;
  88                 sc->sc_model = "mk48t02";
  89         } else {
  90                 size = MK48T08_CLKSZ;
  91                 sc->sc_model = "mk48t08";
  92         }
  93
  94         bus_space_map(sc->sc_bst, ma->ma_offset, size, 0, &sc->sc_bsh);
  95
  96         sc->sc_year0 = YEAR0;
  97         mk48txx_attach(sc);
  98
  99         aprint_normal(" Time-Keeper RAM\n");
 100         aprint_normal_dev(self, "%ld bytes NVRAM plus Realtime Clock\n",
 101             sc->sc_nvramsz);
 102 }